Machine for folding artificial stone.



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MACHINE FOR MOLDING ARTIFICIAL STEINE.

(Application Ied Feb, 14. 1902.)

v 5 Shets-Sheet I.

(No Model.)

No. 700,55l. u Patented May 20, |902.

N. F. PALMER. MACHINE FUR MOLDING ARTIFICIAL STONE.

. (Application led Feb. 14. 1902.)

5 Sheets-Sh'eet 2l v n: Magnus lfrans co., wow-uma., wrm-quero. Dy c.

Patented May 20, |902. N. F. PALMER.

MACHINE FUR HOLDING ARTIFICIAL STONE.

(Application led Fab. 14, 1902.)

` 5 sheets-sheet vs.

(No Model.)

fn @euhm No. 700,55l. Patented May 20,1902. N. F. PALMER.

MACHINE FOR MOLDIMG ARTIFICIAL STONE.

(Application lpd Feb. 14, 1902.)

5 Sheets-Sheet 4,

(NoModel.)

f/G. il

(a e u Y m .Mp M

No. 700,55I. 1 Patented May 20, I902. f

` N. F. PALMER.

MACHINE FDR MOLDING ARTIFICIAL STONE.

(Application led Feb. 14, 1902.) l (Nn Model.) l 5 Sheets-Sheet 5.

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yNovus F. PALMER, or BROOKLYN, NEW YORK.

IVIACHINE FR MOLDING ARTIFICIAL STONE.

SPECIFICATION forming part of Letters Patent N o. 700,551, dated May 20, 1902.

Application led February 14, 1902. Serial No. 94,013. (No model.)

zen'of the United States, and residentof Brooklyn, county of Kings, and State of New York, have invented certain -newfandfuseful l Improvements in Machines for'MoldingArtr oial Stone, of which the followingl isa speciiication.

This invention relates to a .machine for molding concrete artiicial building and paving blocks of the class in which the mold-box has sliding sides by means of which the molded block may be released.

The invention consists more particularly in novel mechanism for imparting the sliding movement to the sides of the mold-box, so that the latter may be expanded and contracted uniformly and in a simple manner.

The invention also consists-in the various other features of construction pointed out in the claims.-

In the accompanying drawings, Figure 1 is a plan of my improved machine; Fig. 2, a front elevation; Fig. 3, an end elevation; Fig. 4, a horizontal section on line 4 4, Fig. 2; Fig. 5, a detail of the racks n j', andI'Fig. 6 a detail of the racks and pinions (looking upward) for setting the mold-box. 1

The letter a represents the lframeof the machine, supporting the bed-plate a-upon which are free to slide the side plates-fb and the end plates c of the mold-bor,which is usually of rectangular form. This sliding movement of the plates ZJ c serves to release the molded block and valso to permit an adjustment of the mold to different sizes of blocks.

Movement is imparted to the plates Z9 and c in the following manner: CZYCZ are a pair of longitudinal shafts hung in bearings a2 of frame a, one of said shafts being provided with a squared end to receive a crank-handle e. The longitudinal shafts CZ are intergeared by bevel-gear cZ f', Figs. 1 and 6, with two transverse shafts f, the four shafts being thus simultaneously rotated and forming a rectangie. This'rectangle is arranged concentric to the mold-box, Fig. 1, the arrangement and number of shafts corresponding to the arrangement and `number of the sides b and en dsc. Each shaft d'carries two pinions (Z2, meshing into racks g of guides g', boltedto ribs b of plates b. In like manner each of `plates o.

or lower the core.

the shafts f carries two pinions f2, meshing into racks h of guides Zt', bolted to ribs c of The racks 7L andg extend at right angles to each other.

, Byfthe'frotation of the handle e and the consequentfs'im'ultaneous rotation of the four shaftsV dZff the pinions dif2 will move the rackslg Zt outward or inward for the same distance,and thus the mold-box will be uniformly expanded or contracted. The guides g' Zt' engage the edges of the base-plate a and serve to impart a Vproper' rectilinear movement to the plates Z) and c.

Within the mold-box is fitted a verticallymovable false bottom t', by which the molded block is lifted to clear the mold-box. The false bottom i as well as the base-plate at are perforated to accommodate one or more vertically-movable cores j,'used in the manufacture of hollow blocks,-a-nd guided in rails a5. These cores are lowered while the false bottom is being raised in order to liberate the molded block and permit its ready removal.

The mechanism for imparting motion to the false bottom and the core is as follows: Zt is a crank-shaft having handle Z134 and rotatinga longitudinal shaft Z by gearing Zt k2 k3 Z. Thesh-aft `Z carries two pinions Zz and two pinions-Z?. The lpinions Z2 engage rackslj, de- `pendingfrorn core j. andy thus serve to raise To adjust the movement of the core, the pinions Z2 Z'g are longitudinally movable on shaft Z by groove and feather, so as to become disengaged from the racks j vand to rengage therewith after the racks have been dili'erently set. The pinions Z3 are inter-geared with pinions m' of a longitudinal shaft m, arranged parallel to shaft -Z. Each of theffour pinions Z3 m engages with its outermost teeth a rack n, so that the four racks are simultaneously raised or lowered. AThe racks are guided in grooves a3 of frame ct, Fig. 4, and pass 'through perforations a4 of base-plate ct in order to operatively engage the false bottom t'. As the shaft lois rotated it will thus lower the core j 'by racks j' and will simultaneously elevate the false bottom lZbyracks n. f i

In use the concrete is tampe'dintothe moldbox and is struck off. The handle e is then the handle Zt4 is operated to raise the molded IOO block out of the mold and simultaneously withdraw the core.

It will be seen that by my invention the Va-l rious parts of the mold-box are quickly, positively, and uniformly operated, so that a uniform product is obtained and the output of the machine is increased.

Vhat I claim isl. In a machine for molding artificial stone, the combination of a mold-box having sliding sides and ends, with a series of intergeared shafts corresponding in number to the number of mold-box sides and ends, and with racks and pinions for transmitting motion from the shafts to said sides and ends, suhstantially as specified.

2. In a machine for m olding` artificial stone, the combination of a mold-box having sliding sides and ends, with a series of intergeared shafts arranged concentric to the 1no1d-hoX, pinions mounted upon said shafts, racks engaged by the pinions, and means for connecting said racks to the sliding sides and ends, substantially as specified.

In a machine for molding artificial'stone, the combination of a rectangular mold-box having sliding sides and ends, With four intergeared shafts arranged in a rectangle concentric to said mold-box, pinions mounted upon said shafts, two series of racks engaged by said pinions and extending at right angles to each other, and means for connecting said racks to the sliding sides and ends, substantially as specified.

Signed by me at New York city, county and State of New York, this 13th day of February, 1902.

NOYES F. PALMER.

Witnesses:

WILLIAM SCHULZ, F. v. ',BRIESEN. 

